Polling Of A Database
Jan 7, 2008
I have a sql server database which is a huge database(let us call as database 1) and highly secured. I create another database which is small in size (let us call as database 2). I create tables in database2 which requires input from database1. In order to achieve this i create views in database2 for the input from database1. Now when ever records are added in database1 view needs to be updated. Now here is tehq query.
1. when ever records is inserted in database1 views needs to be updated in the database2. how can i achieve this ?
2. if the answer is triggers or if are there are any ways to deal with it please let me know
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Dec 27, 2007
Im getting this error when trying to set up a cache dependency...are there any special permissions etc?From CS:SqlCacheDependency dep = new SqlCacheDependency("MySite-Cache", "Products");Cache.Insert("Products", de.GetAllProductsList(), dep); From connectionStrings.config:<add name="SiteDB" connectionString="Data Source=localhost,[port]SQLEXPRESS;Integrated Security=true;User Instance=true; AttachDBFileName=|DataDirectory|ASPNETDB.MDF" providerName="System.Data.SqlClient" />Also tried this using my machinename<add name="SiteDB" connectionString="Data
Source=<machinename>,[port]SQLEXPRESS;Integrated Security=true;User
Instance=true; AttachDBFileName=|DataDirectory|ASPNETDB.MDF"
providerName="System.Data.SqlClient" /> From web.config: <caching> <sqlCacheDependency enabled="true" pollTime="10000"> <databases> <add name="MySite-Cache" connectionStringName="SiteDB" pollTime="2000"/> </databases> </sqlCacheDependency> </caching> EDIT: So making progress I can't seem to get the table registered for cache dependency:The sample i have says"aspnet_regsql.exe -E -S .SqlExpress -d aspnetdb -t Customers -et"and the command line response is "Enabling the table for SQL cache dependency..An error has happened. Details of the exception:The table 'Customers' cannot be found in the database."Where does this "Customers" table come from? There is obviously not an application specific "Customers" table in aspnetdb I'm confused probably more by the example than anything....
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Jul 20, 2006
I've been having trouble getting the SqlCacheDependency to work without polling (which is set up through SqlCacheDependencyAdmin or aspnet_regsql). If you check out the documentation it says things like:
Microsoft:
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Feb 6, 2000
I have an application which needs recently inserted records from SQL Server. SQL Server gets raw data from third party and makes summary out of it. This summary needs to be read from SQL Server whenever it is ready. The application currently polls the DB and gets the data. Instead, Is there a way to get the summary pushed from SQL Server to application. Your help is highly appreciated.
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Dec 19, 2006
Hi folks,
Somebody got an idea about how to implement the following in SQL 2005? Or does anybody know of an example posted somewhere for this? In my opinion it's such a common problem, someone somewhere is bound to have written something about this somewhere (but I could nog find it).
We've got a table in a database and regularly an event happens that inserts a record in this table. At that moment a signal should be given to a .NET-service (in the form of a XML-message) which will do some intelligent stuff with this info.
In SQL 2000 I would implement a polling mechanism that every 10 secs (or some other appropriate interval) would do a select on the table to see if anything had changed. But with all the new features in 2005, I'm of the opinion that this could be done differently.
I've been looking at:
Notification Services, but this looks a bit like overkill for such a simple demand.
Query notifications from the Service Broker. But this is also a bit much because deletes are also a cause for a notification. Also all the articles I found are dealing with cache expiration. (Afterthought... maybe SELECT MAX(id) will work as defined query)
Ofcourse it would be nice if the signal is queued somewhere when the receiving service is temporarily not available.
Thanx in advance,
Lex
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Apr 3, 2008
Hi all, I'm in the process of cleaning up a very VERY poorly implemented system. One of the problems I'm tackling consists of :
1 - Database A
2 - Database B (different schema than A)
3 - A task which regularly polls A, checks for updated/new records and inserts them (with some transformation) into B
As you can imagine, the overhead of the polling is killing the system. What I want to know is :
What is the best way for A to notify B whenever there are changes to a particular table on A ?
I'm running 2000 but we will most probably upgrade to 2005.
thanks in advance to everybody
Omar
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Mar 27, 2007
Hello
I was wondering where I can change the polling interval settings in sql server management studio..
It appears to be different from the one in Enterprise Manager.
very little info can be found on the Internet
Thanks!
Worf
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Nov 29, 2007
Hi,
I want to achieve the following. Please let me know if it is possible or not. If not reasons.
There are 2 servers A and B. Server B has one service and queue available and some data is available in the queue. The data in the queue is online and being received by some other database. Now I want to access the data in the queue in server B from a service which is residing in Server A.
In short I want to continuosly poll the Queue on Server B from Server A. Please let me know whether this is feasible or not.
waiting for your earliest reply.
Thanks,
Balram.
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May 2, 2007
Hi,
I am a newbie in SSIS.
Can anybody please help me in the following.
Here is the task that I want to achieve:
1. continously poll a db table every 1 minute,
if the value of a paticular cell in the table has changed since last poll,
then initiate the second task
2. do a select query that picks about 10,000 new rows off another db table,
the 10,000 rows should then be stored in a in-memory dataset.
Every time the poll initiates a new select query, it should insert the new rows to the existing in-memory dataset.
thus if the select runs for 2 times in 2 minutes, the the in-memory dataset would contain a maximum of 20,000 rows.
3. Then I want to apply a set of transformations on the dataset and then finally update some db tables, push some records to the ssas database. (push mode incremental processing)
which sub tasks can be achieved and which cannot.
if not, Is there a workaround?
Please do provide some specific links that accomplish some of these similar tasks.
I have tested some functionality, like
doing a full processing of a ssas database.
reading from a database table and inserting into a flat file.
I tired to use the ExecuteSQLTask, and i also assigned the resultant to an user:variable. the execution completed succesfully but I am not able to see the value of the variable change. also I am not able to use the variable to figure out a change in previous value and thus initiate a sql select. or use the variable to do anything.
Regards
Vijay R
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Nov 15, 2007
We replicate a SQL2000 database (DataBaseA) to a SQL2000 database (DataBaseB) by using the Restore function and hasn't change its logical name but only the physical data path and file name. It is running fine for a year. We use the same way to migrate the DataBaseB to a new SQL2005 server with the Restore function and the daily operation is running perfect. However, when we do the Backup of DatabaseB in the SQL2005, it just prompt the error message
System.Data.SqlClient.SqlError: The backup of full-text catalog 'DataBaseA' is not permitted because it is not online. Check errorlog file for the reason that full-text catalog became offline and bring it online. Or BACKUP can be performed by using the FILEGROUP or FILE clauses to restrict the selection to include only online data. (Microsoft.SqlServer.Smo)
Please note we left the DataBaseA in the old SQL2000 server.
Please help on how we can delete the Full-text catalog from DatabaseB so we can do a backup
Many Thanks
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Oct 14, 2015
I have database on localhost and i want to show this data on my website. I want to create a database online and want to sync with Local Host. Can it be possible syncing data automatically after some interval?
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Oct 9, 2007
yes,I have an error, like 'The database file may be corrupted. Run the repair utility to check the database file. [ Database name = SDMMC Storage Cardwinpos_2005WINPOS2005.sdf ]' .I develope a program for Pocket Pcs and this program's database sometimes corrupt.what can i do?please help me
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Aug 18, 2005
I want to create a duplicate database in sql 2000 using asp.net from a webform
I created a database using CREATE DATABASE .......
But how to copy tables, views, stored procedures to newly created
database from old using asp.net from webform
Is there any another method to create a duplicate database with another name
from existing database on same server ?
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Sep 2, 2007
Greetings, I have just arrived back into the country (NZ) and back into ASP.NET.
I am having trouble with the following:An attempt to attach an auto-named database for file (file location).../Database.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
It has only begun since i decided i wanted to use IIS, I realise VWD comes with its own localhost, but since it is only temporary, i wanted a permanent shortcut on my desktop to link to my intranet page.
Anyone have any ideas why i am getting the above error? have searched many places on the internet and not getting any closer.
Cheers ~ J
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Apr 9, 2008
I have a problem when i restore my .DAT_BAK file. I am getting error like "The backup set holds a backup of a database other than existing database. Restore Database is terminating abnormally".
I tried by using
RESTORE DATABASE <DATABASENAME>
FROM DISK = 'D:DATAMYTEST.DAT_BAK'
WITH MOVE 'VZAI_DATA' TO D:PROGRAM FILES..MSSQLTEST.MDF',
MOVE 'VZAI_LOG' TO D:PROGRAM FILES..MSSQLTEST.LDF',
REPLACE
And also i tried like
RESTORE DATABASE <DATABASENAME>
FROM DISK = 'D:DATAMYTEST.DAT_BAK'
WITH REPLACE
When i use like this,
RESTORE FILELISTONLY FROM DISK = 'D:DATAMYTEST.DAT_BAK'. I am able to get the output as LogicalName, PhysicalName, Type, FileGroupName, Size, etc.
Can i anyone please help me out?
Thanks in Advance,
Anand Rajagopal
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Oct 2, 2007
I am using SQL express and Visual web developer on windows Vista.
When I try to create a new database the following message appears.
CREATE DATABASE permission denied in database master (error 262)
I log on to my computer as an administrator.
Help appreciated
Prontonet
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Jan 14, 2008
Hi all,
From the http://msdn.microsoft.com/en-us/library/bb384469.aspx (Walkthrough: Creating Stored Procedures for the Northwind Customers Table, I copied the following sql code:
--UpdateSPforNWcustomersTable.sql--
USE NORTHWIND
GO
IF EXISTS (SELECT * FROM sysobjects WHERE name = 'SelectCustomers' AND user_name(uid) = 'dbo')
DROP PROCEDURE dbo.[SelectCustomers]
GO
CREATE PROCEDURE dbo.[SelectCustomers]
AS
SET NOCOUNT ON;
SELECT CustomerID, CompanyName, ContactName, ContactTitle, Address, City, Region, PostalCode, Country, Phone, Fax FROM dbo.Customers
GO
IF EXISTS (SELECT * FROM sysobjects WHERE name = 'InsertCustomers' AND user_name(uid) = 'dbo')
DROP PROCEDURE dbo.InsertCustomers
GO
CREATE PROCEDURE dbo.InsertCustomers
(
@CustomerID nchar(5),
@CompanyName nvarchar(40),
@ContactName nvarchar(30),
@ContactTitle nvarchar(30),
@Address nvarchar(60),
@City nvarchar(15),
@Region nvarchar(15),
@PostalCode nvarchar(10),
@Country nvarchar(15),
@Phone nvarchar(24),
@Fax nvarchar(24)
)
AS
SET NOCOUNT OFF;
INSERT INTO [dbo].[Customers] ([CustomerID], [CompanyName], [ContactName], [ContactTitle], [Address], [City], [Region], [PostalCode], [Country], [Phone], [Fax]) VALUES (@CustomerID, @CompanyName, @ContactName, @ContactTitle, @Address, @City, @Region, @PostalCode, @Country, @Phone, @Fax);
SELECT CustomerID, CompanyName, ContactName, ContactTitle, Address, City, Region, PostalCode, Country, Phone, Fax FROM Customers WHERE (CustomerID = @CustomerID)
GO
IF EXISTS (SELECT * FROM sysobjects WHERE name = 'UpdateCustomers' AND user_name(uid) = 'dbo')
DROP PROCEDURE dbo.UpdateCustomers
GO
CREATE PROCEDURE dbo.UpdateCustomers
(
@CustomerID nchar(5),
@CompanyName nvarchar(40),
@ContactName nvarchar(30),
@ContactTitle nvarchar(30),
@Address nvarchar(60),
@City nvarchar(15),
@Region nvarchar(15),
@PostalCode nvarchar(10),
@Country nvarchar(15),
@Phone nvarchar(24),
@Fax nvarchar(24),
@Original_CustomerID nchar(5)
)
AS
SET NOCOUNT OFF;
UPDATE [dbo].[Customers] SET [CustomerID] = @CustomerID, [CompanyName] = @CompanyName, [ContactName] = @ContactName, [ContactTitle] = @ContactTitle, [Address] = @Address, [City] = @City, [Region] = @Region, [PostalCode] = @PostalCode, [Country] = @Country, [Phone] = @Phone, [Fax] = @Fax WHERE (([CustomerID] = @Original_CustomerID));
SELECT CustomerID, CompanyName, ContactName, ContactTitle, Address, City, Region, PostalCode, Country, Phone, Fax FROM Customers WHERE (CustomerID = @CustomerID)
GO
====================================================================================
I executed the above code in my SQL Server Management Studio Express (SSMSE) and I got the following error messages:
Msg 911, Level 16, State 1, Line 1
Could not locate entry in sysdatabases for database 'NORTHWIND'. No entry found with that name.
Make sure that the name is entered correctly.
===============================================================================================================
I know I recreated the NORTHWIND Database from a different Database before and I did not do anything for the entry in sysdatabases. How can I change the entry in sysdatabases for database 'NORTHWIND' now? Please help and advise.
Thanks in advance,
Scott Chang
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Mar 27, 2007
hii want to copy one database table to onther database table using script?my database is ms-sql server 2000
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Jan 11, 2006
I recently added a new user to my database. Now I want to delete that user, but I keep getting the error above. What do I need to do to delete my recently added user?
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Sep 10, 2012
We have a SQL database that uses Active Directory with Windows Authentication. Can users that are members of the Active Directory group that has read/write access to the SQL database create ODBC connections to access the database directly and update the data? They dont have individual logins on the server. They are only members of the Active Directory group that has a login?
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Mar 8, 2015
I had to to relocate the database log file and I issued an Alter database command but by mistake I put a space in the file name as below. The space is at the beginning file name. Now I am unable get the database loaded to SQL Server. The database has 2 replications configured, so deleting and re-attaching the database means the replication needs to be re-configured. Is there an alternative way to issue a command to update the database FILENAME ? Not sure if this can be edited in master database (sys files).
ALTER DATABASE [User_DB]
MODIFY FILE (NAME = User_DB_log, FILENAME = 'I:SQLLogs User_DB_log.ldf')
GO
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Mar 31, 2007
I created the db with the attached script and I am able to access ituntil I reboot the server. I've tried enabling flag 1807 via the SQLserver service and the startup parameters of the instance. In allcases the database always come up suspect after a reboot. There wasone instance where I was able to recover, but I am not sure how thathappened.Does anyone have an idea of how I can reboot the server without thedatabase becomming suspect?USE MASTERGODBCC TRACEON(1807)GO--DBCC TRACEOFF(1807)--DBCC TRACESTATUS(1807)GOCREATE DATABASE ReadyNAS ON( NAME = ReadyNAS_Data,FILENAME = '\NAS1NASDiskSQL ServerReadyNASReadyNAS_Data.mdf',SIZE = 100MB,MAXSIZE = 20GB,FILEGROWTH = 20MB)LOG ON ( NAME = ReadyNAS_Log,FILENAME = '\NAS1NASDiskSQL ServerReadyNASReadyNAS_Log.ldf',SIZE = 20MB,MAXSIZE = 100MB,FILEGROWTH = 10MB)
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Nov 5, 2007
Hi all,
I downloaded and ran AdventureWorks.msi into my SQL Server Management Studio Express (SSMSE) one year ago.But I did not know how to attach it to my SSMSE then. Last week, I deleted it from the "Add or Remove" of Control Panel and I downloaded the new AdventureWork.msi and installed it my SSMSE. Today, I tried to use the Database Explorer of VB 2005 Express for the first Stored Procedure programming. I clicked on AdventureWorks.mdf and I got the following error: One or more files do not match the primary of the database. If you are attempting to attach a database, retry the operation with the correct files. If this is an existing database, the file may be corrupt and should be restored from a backup. Cannot open user default database. Login failed. Login failed for user 'CENADe1enxshc'. Log file 'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDataAdventureWorks_Data_log.ldf' does not match the primary file. It may be from a different database of the log may have been rebuilt previously. Please help and advise me how to correct this problem.
Thanks,
Scott Chang
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Feb 13, 2008
I have installed 2 SQL Server 2005 Express sample databases from 2 books, ASPnet 2.0 and ADOnet 2.0. The ASPNETDB.MDF was shown in App_Data and Database Explorer, but not in the SQL Server Management Studio Express. The AdoStepBy Step database created by a ConfigDB.exe was displayed in the Management Studio, but not in the App_Data, or Database Explorer.
Is this the way SQL Server 2005 runs the 2005 databases for SQL Server 2005 Express only? Or also in SQL Server 2005?
TIA,
Jeffrey
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Jul 15, 2015
I am setting up SQL audit on sql servers in my environment based on requirement. I want to create database specifications ASAP database created. I tried DDL trigger but Audit doesn't support triggers. So I created audit specifications on model database. the only problem with this is every specification created on new database with same name.database specification name includes newly created database name or other methods to create database specifications on newly created databases.
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Sep 9, 2015
I am new to SSIS. I have been struggling with this for the past one week. I have a weird task. I need to import several tables from one database to a different server with a new database name. We need to do this at the end of every year. The main problem here is that the number of tables varies every year. You may not have all the tables as last year or may have more tables. So I need to create a dynamic task that takes care of this every year without changing the package.
I have performed the following tasks **
1. Create a new dynamic database. ( I have used Execute SQL Task to do this) 2. Copy all the table structures ( I have used Execute SQL Task to do this)
3. Import Data. This is the main problem. I was trying to create a dynamic connection string with variables as suggested in several forums but I finally came to know that this cannot be done if the table structures are different as the metadata cannot be refreshed at runtime.
4. The final step to create a process to validate the data (the count from each table for both source and destination. I think this can be done with Sql task.
What is the best method to do this? My DBA does not like “Transfer SQL Objects Task” or “transfer Database Task”. I would like to create this as a dynamic process.
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Apr 23, 2006
I have a medical records system, SoapWare v4.90, that uses MSDE (SQL2000) databases. Due to the 2gb limitation, I am trying to migrate over to SQL 2005 (Standard or Express) which I have heard works fine. The SoapWare has a datamanager that allows me to log in to the MSDE instance, detach the SoapWare databases from msde (as well as do backups, etc) which I can confirm are detached.
Then I log back into a SQL2005 database instance using the datamanager and try to attach the database. This is what their pictured instructions demonstrate. However, I get the following error:
Database 'sw_charts' cannot be upgraded because it is read-only or has read-only files. Make the database or files writeable, and rerun recovery.
Of course, some of the entries will be read only, since doctors have to sign off the charts and are not allowed to subsequently change them. But I should still be able to switch over to sql 2005?!?!?!?
Or... is there a way to attach the databases to SQLExpress manually?
Help pls?
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Feb 4, 2008
Hi all
Iam working in Prodcution ENV,Please help how make space
The log file for database 'Home_alone' is full. Back up the transaction log for the database to free up some log space.
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Sep 26, 2006
Dear All,
i have a question abt winCE 4.2 and SQL server CE.
i am using VB.net of Visual Studio 2005
My platform is using a PDA with winCE 4.2 and SQL server CE. The Host program is using dbf files on desktop side.
I got a problem of how to sync / read the sql CE data from a windows application.
so, i wanna ask,
1. any method to access the data from winCE data by windows application? or can i convert the sdf file to windows readable files? or any others?
2. Can i use a MDB to sync with SQL server CE?
can i synchronize the mobile device which has a SQL Server CE database with the Access database on the desktop?
last question,
3. is that windows CE .net 4.2 not support pocket access (cdb) anymore?
please help me out
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Apr 8, 2007
Hi all (newbie @ asp.net)(oldie @ ASP 3)What is the purpose of using an attached MDF database files in the App_Data folder on a web site as to importing it into the SQL server directly or creating it on the SQL server. Does a mdf database attached file purely use the SQL server as a connection interface.Is it something similiar to DSN(ODBC) Connections for ms access databases.
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Feb 12, 2008
Using SQL Server Express 2005, I have two databases. AppDB - The main application database.GeoDB - A somewhat static ZIP code / states / other geographic stuff databaseI need to have some foreign key columns in tables in AppDB reference columns in the GeoDB database tables. Eventually other application database besides AppDB will be doing the same thing in our infrastructure. After googling and reading for days, here is what I
think I know:You cannot create foreign keys that reference tables in another database in SQL Server.You
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2005 supports multiple schemas within the same database. Maybe I should logically separate my databases this way? Seems like it would be a tough solution to manage since I already have some databases live in production that will eventually use this 'static' GeoDB. Also, seems like it
wouldn't be as portable as keeping the GeoDB info in its own database,
but maybe I'm being too software engineer-ish here - afraid of low
cohesion, high coupling.I will greatly appreciate any advice I can get, or any more options I am missing. Thanks,Adam Nofsingerucnmedia.com
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Nov 1, 2001
Hi all,
I have to change the date format for one database in a group of databases in my sql server 2000,Can you please tell me how to change the date format.
thanks in advance
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May 9, 2012
I'm taking a database(read-only) backup from one server and restoring it on other server. As soon as restore is done it is bringing database into single-user read-only mode.
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